| 堆内捕集器对压力容器中子辐照影响分析 |
| |
| 引用本文： | 徐红,尹志涛,刚直,周志伟.堆内捕集器对压力容器中子辐照影响分析[J].原子能科学技术,2013,47(Z1):234-238. |
| |
| 作者姓名： | 徐红 尹志涛 刚直 周志伟 |
| |
| 作者单位： | 1.国家核电技术有限公司 北京研发中心，北京100190；2.清华大学 核能与新能源技术研究院，北京100084 |
| |
| 摘 要： | 严重事故下为实现堆内熔融物滞留，可采用堆内捕集器(IVCC)的策略。捕集器属压力容器的一部分，属不可更换设备，需长期在堆内受中子辐照。本文通过对典型压水堆压力容器模型和带IVCC的压力容器模型的比较，发现IVCC不会改变压力容器内快中子通量，不会对压力容器的辐照造成影响。且IVCC使得压力容器的热中子通量明显减小，降低了压力容器的整体辐照水平。这说明IVCC对压力容器的辐照性能不会产生不利影响，反而有助于防止压力容器的老化。
|
| 关 键 词： | 压力容器 堆内捕集器 中子辐照 MCNP |
Analysis of In-vessel Core Catcher Influencing on Neutron Irradiation of Pressure Vessel |
| |
| XU Hong,YIN Zhi-tao,GANG Zhi,ZHOU Zhi-wei.Analysis of In-vessel Core Catcher Influencing on Neutron Irradiation of Pressure Vessel[J].Atomic Energy Science and Technology,2013,47(Z1):234-238. |
| |
| Authors: | XU Hong YIN Zhi-tao GANG Zhi ZHOU Zhi-wei |
| |
| Affiliation: | 1.State Nuclear Power Technology R & D Center, Beijing 100190, China;2.Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | The strategy of in-vessel core catcher (IVCC) can be applied to achieve in-vessel retention on the condition of serious accident in pressured water reactor (PWR). The IVCC is a part of reactor pressure vessel (RPV) and it can’t be replaced in life span of nuclear power plant. In addition, it endured neutron irradiation in long-term. The typical PWR RPV model and IVCC model were studied. The results show that IVCC don’t change fast neutron flux in pressure vessel, and it don’t influence the RPV irradiation result. Furthermore, the thermal neutron flux of pressure vessel obviously reduces, and the total irradiation level of pressure vessel reduces. The IVCC can’t make against irradiation performance of the RPV, and it is useful for avoiding aging of RPV adversely. |
| |
| Keywords: | pressure vessel in-vessel core catcher neutron irradiation MCNP |
|
| 点击此处可从《原子能科学技术》浏览原始摘要信息 |
|
点击此处可从《原子能科学技术》下载全文 |
|
